Originally Posted by BrownGem
I found a page with many cheap cables for this purpose. All of them stated either not compatible with 3G or compatible with 3G running 2.2 or lower firmware. No cables period to support 3GS. I am reading apple changed compatibility in the firmware after 2.2 to only work with their A/V out cable. Of course I couldn't find the A/V cable on Apple's website. Maybe other forum members can tell you something different. Absolutely amazing if this is true.
Edit: Thanks iNinja...you are fast lol. Why couldn't I find those dangit.
LOL, no problem, although Apple cables are expensive, they work. I just typed iPhone 3GS av cable into the Apple store search box.